/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 * <p/>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.handmark.pulltorefresh.library.internal;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Matrix;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.Log;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView.ScaleType;

import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Orientation;
import com.handmark.pulltorefresh.library.R;

public class RotateLoadingLayout extends LoadingLayout {

    static final int ROTATION_ANIMATION_DURATION = 800;

    private Animation mRotateAnimation;
    private final Matrix mHeaderImageMatrix;

    private float mRotationPivotX, mRotationPivotY;

    private final boolean mRotateDrawableWhilePulling;

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public RotateLoadingLayout(Context context, Mode mode, Orientation scrollDirection, TypedArray attrs) {
        super(context, mode, scrollDirection, attrs);

        mRotateDrawableWhilePulling = attrs.getBoolean(R.styleable.PullToRefresh_ptrRotateDrawableWhilePulling, true);

        mHeaderImage.setScaleType(ScaleType.MATRIX);
        mHeaderImageMatrix = new Matrix();
        mHeaderImage.setImageMatrix(mHeaderImageMatrix);

        mRotateAnimation = new RotateAnimation(0, 359, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
                0.5f);
        mRotateAnimation.setInterpolator(ANIMATION_INTERPOLATOR);
        mRotateAnimation.setDuration(ROTATION_ANIMATION_DURATION);
        mRotateAnimation.setRepeatCount(Animation.INFINITE);
        mRotateAnimation.setRepeatMode(Animation.RESTART);
    }

    public void onLoadingDrawableSet(Drawable imageDrawable) {
        if (null != imageDrawable) {
            mRotationPivotX = Math.round(imageDrawable.getIntrinsicWidth() / 2f);
            mRotationPivotY = Math.round(imageDrawable.getIntrinsicHeight() / 2f);
        }
    }

    protected void onPullImpl(float scaleOfLayout) {
        float angle;
        if (mRotateDrawableWhilePulling) {
            angle = scaleOfLayout * 90f;
        } else {
            angle = Math.max(0f, Math.min(180f, scaleOfLayout * 360f - 180f));
        }

        mHeaderImageMatrix.setRotate(angle, mRotationPivotX, mRotationPivotY);
        mHeaderImage.setImageMatrix(mHeaderImageMatrix);
    }

    @Override
    protected void refreshingImpl() {
        mHeaderImage.clearAnimation();

        mHeaderImage.startAnimation(mRotateAnimation);
    }

    @Override
    protected void resetImpl() {
//        Log.e("重置动画", "重置动画");
        mHeaderImage.clearAnimation();
        resetImageRotation();
    }

    private void resetImageRotation() {
        if (null != mHeaderImageMatrix) {
            mHeaderImageMatrix.reset();
            mHeaderImage.setImageMatrix(mHeaderImageMatrix);
        }
    }

    @Override
    protected void pullToRefreshImpl() {
        // NO-OP
        resetImpl();
        Log.e("pullToRefreshImpl","pullToRefreshImpl");
    }

    @Override
    protected void releaseToRefreshImpl() {
        // NO-OP
        Log.e("releaseToRefreshImpl","releaseToRefreshImpl");
        resetImpl();
    }

    @Override
    protected int getDefaultDrawableResId() {
        return R.drawable.default_ptr_rotate;
    }

}
